The speed ratio of passenger car to passenger car () A. 3：4B. 4：3C. 5：4D. 4：5

The speed ratio of passenger car to passenger car () A. 3：4B. 4：3C. 5：4D. 4：5

(35 / 3): (1 / 4), = 0.2:0.25, = 4:5; therefore, D

The 4-hour journey of a bus is equal to the 3-hour journey of a car. The speed ratio of a bus to a car is ()

The 4-hour journey of a bus is equal to the 3-hour journey of a car. The speed ratio of a bus to a car is (3:4)

The speed ratio of bus to car is 3:4

That's right, that's right!

For the same distance, the car runs in 3 hours and the bus runs in 4 hours. How much slower is the speed of the bus than that of the car?
The key is to write and explain the problem

For the same journey, the car takes 3 hours, 1 / 3 of the total journey per hour. The bus takes 4 hours, 1 / 4 of the total journey per hour. The bus is slower than the car (1 / 3-1 / 4) / 1 / 3 = 1 / 4